feat(romhacks): add Discord rom-hack ingestion stack (DCE -> JDownloader -> RomM)

Inert by default: empty token keeps the orchestrator idle and DRY_RUN=true
suppresses downloads. Orchestrator exports per-generation forum threads via
DiscordChatExporter, extracts download links + art, stages metadata, and writes
JDownloader crawljobs. Armed here with an alt account token and all 11 romhack
forums, still in DRY_RUN pending first-cycle validation.

stacks/romhacks/orchestrator/channels.json

@@ -0,0 +1,26 @@
+{
+  "_comment": "Forum channels to harvest (type 15 — each thread is one rom-hack). DCE's --include-threads all captures the threads beneath each forum. 'platform' is a hint for the later RomM hand-off and is not used yet. Editing this file requires a push + Portainer rebuild (it is baked into the orchestrator image). Cheat-code forums are intentionally omitted.",
+  "hosts": [
+    "mega.nz",
+    "mediafire.com",
+    "drive.google.com",
+    "pixeldrain.com",
+    "gofile.io",
+    "1fichier.com",
+    "workupload.com",
+    "krakenfiles.com"
+  ],
+  "channels": [
+    { "id": "1474174360926290105", "label": "gen-1-romhacks", "platform": "gb" },
+    { "id": "1474174532196761802", "label": "gen-2-romhacks", "platform": "gbc" },
+    { "id": "1474174608587489416", "label": "gen-3-romhacks", "platform": "gba" },
+    { "id": "1474174672210755714", "label": "gen-4-romhacks", "platform": "nds" },
+    { "id": "1474174736438132756", "label": "gen-5-romhacks", "platform": "nds" },
+    { "id": "1474174789680632084", "label": "gen-6-romhacks", "platform": "3ds" },
+    { "id": "1474174859671240898", "label": "gen-7-romhacks", "platform": "3ds" },
+    { "id": "1474174950138183880", "label": "gen-8-romhacks", "platform": "switch" },
+    { "id": "1474175004248903935", "label": "gen-9-romhacks", "platform": "switch" },
+    { "id": "1474175244209098986", "label": "joiplay-rpgxp-games", "platform": "pc" },
+    { "id": "1475605095805747351", "label": "unique-romhacks", "platform": "" }
+  ]
+}